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<a href="mpf__named__event_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright 2008-2015 Arsen Chaloyan</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *     http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * limitations under the License.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifndef MPF_NAMED_EVENT_H</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MPF_NAMED_EVENT_H</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * @file mpf_named_event.h</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * @brief MPF Named Events (RFC4733/RFC2833)</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="mpf__codec__descriptor_8h.html">mpf_codec_descriptor.h</a>&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<a class="code" href="apt_8h.html#ad3d792bfc75893affad257781ea46e55">APT_BEGIN_EXTERN_C</a></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">/** Named event declaration */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="mpf__named__event_8h.html#a740780abcb4c9cf3ca030e77a024b211">   30</a></span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structmpf__named__event__frame__t.html">mpf_named_event_frame_t</a> <a class="code" href="structmpf__named__event__frame__t.html">mpf_named_event_frame_t</a>;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">/** Named event (RFC4733/RFC2833, out-of-band DTMF) */</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html">   34</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structmpf__named__event__frame__t.html">mpf_named_event_frame_t</a> {<span class="comment"></span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">    /** event (DTMF, tone) identifier */</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html#a54affe33ca98e1d8cba3fa1c4d2acf1e">   36</a></span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a54affe33ca98e1d8cba3fa1c4d2acf1e">event_id</a>: 8;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#if (APR_IS_BIGENDIAN == 1)</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor"></span><span class="comment">    /** end of event */</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#adfadbcc21df4d99d47b7eb36503dbf30">edge</a>:     1;<span class="comment"></span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">    /** reserved */</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a110dfc840cb57a18974f2a9b5dfe23e0">reserved</a>: 1;<span class="comment"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">    /** tone volume */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a47e4647f3cd75b3b76921de178f88196">volume</a>:   6;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor"></span><span class="comment">    /** tone volume */</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html#a47e4647f3cd75b3b76921de178f88196">   46</a></span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a47e4647f3cd75b3b76921de178f88196">volume</a>:   6;<span class="comment"></span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">    /** reserved */</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html#a110dfc840cb57a18974f2a9b5dfe23e0">   48</a></span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a110dfc840cb57a18974f2a9b5dfe23e0">reserved</a>: 1;<span class="comment"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">    /** end of event */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html#adfadbcc21df4d99d47b7eb36503dbf30">   50</a></span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#adfadbcc21df4d99d47b7eb36503dbf30">edge</a>:     1;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor"></span><span class="comment">    /** event duration */</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structmpf__named__event__frame__t.html#a9c517b5243fb6dde4f8366e8afad7504">   53</a></span>&#160;    apr_uint32_t <a class="code" href="structmpf__named__event__frame__t.html#a9c517b5243fb6dde4f8366e8afad7504">duration</a>: 16;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;};</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">/** Create named event descriptor */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<a class="code" href="mpf_8h.html#ad304fb07b6dc1c02975c556d198992c8">MPF_DECLARE</a>(<a class="code" href="structmpf__codec__descriptor__t.html">mpf_codec_descriptor_t</a>*) <a class="code" href="mpf__named__event_8h.html#a6f2592b8ddb83e508bf6b98b4dacea33">mpf_event_descriptor_create</a>(apr_uint16_t sampling_rate, apr_pool_t *pool);</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">/** Check whether the specified descriptor is named event one */</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<a class="code" href="mpf_8h.html#ad304fb07b6dc1c02975c556d198992c8">MPF_DECLARE</a>(<a class="code" href="apt_8h.html#ac7b6d8df47829d778eb598e1cc52cc2a">apt_bool_t</a>) <a class="code" href="mpf__named__event_8h.html#a71def7a96b45d762d4313abc2d711b58">mpf_event_descriptor_check</a>(const <a class="code" href="structmpf__codec__descriptor__t.html">mpf_codec_descriptor_t</a> *descriptor);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">/** Convert DTMF character to event identifier */</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<a class="code" href="mpf_8h.html#ad304fb07b6dc1c02975c556d198992c8">MPF_DECLARE</a>(apr_uint32_t) <a class="code" href="mpf__named__event_8h.html#acc561e8c441496ab9218dc25c7e69233">mpf_dtmf_char_to_event_id</a>(const <span class="keywordtype">char</span> dtmf_char);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">/** Convert event identifier to DTMF character */</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<a class="code" href="mpf_8h.html#ad304fb07b6dc1c02975c556d198992c8">MPF_DECLARE</a>(<span class="keywordtype">char</span>) <a class="code" href="mpf__named__event_8h.html#a649ae2174fd3df633faa170377a100b9">mpf_event_id_to_dtmf_char</a>(const apr_uint32_t event_id);</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<a class="code" href="apt_8h.html#a432919823b38eb7e2b6fa2b544fb1644">APT_END_EXTERN_C</a></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* MPF_NAMED_EVENT_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="mpf__named__event_8h_html_acc561e8c441496ab9218dc25c7e69233"><div class="ttname"><a href="mpf__named__event_8h.html#acc561e8c441496ab9218dc25c7e69233">mpf_dtmf_char_to_event_id</a></div><div class="ttdeci">apr_uint32_t mpf_dtmf_char_to_event_id(const char dtmf_char)</div></div>
<div class="ttc" id="mpf__named__event_8h_html_a71def7a96b45d762d4313abc2d711b58"><div class="ttname"><a href="mpf__named__event_8h.html#a71def7a96b45d762d4313abc2d711b58">mpf_event_descriptor_check</a></div><div class="ttdeci">apt_bool_t mpf_event_descriptor_check(const mpf_codec_descriptor_t *descriptor)</div></div>
<div class="ttc" id="mpf__named__event_8h_html_a649ae2174fd3df633faa170377a100b9"><div class="ttname"><a href="mpf__named__event_8h.html#a649ae2174fd3df633faa170377a100b9">mpf_event_id_to_dtmf_char</a></div><div class="ttdeci">char mpf_event_id_to_dtmf_char(const apr_uint32_t event_id)</div></div>
<div class="ttc" id="apt_8h_html_a432919823b38eb7e2b6fa2b544fb1644"><div class="ttname"><a href="apt_8h.html#a432919823b38eb7e2b6fa2b544fb1644">APT_END_EXTERN_C</a></div><div class="ttdeci">#define APT_END_EXTERN_C</div><div class="ttdef"><b>Definition:</b> apt.h:38</div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html_a9c517b5243fb6dde4f8366e8afad7504"><div class="ttname"><a href="structmpf__named__event__frame__t.html#a9c517b5243fb6dde4f8366e8afad7504">mpf_named_event_frame_t::duration</a></div><div class="ttdeci">apr_uint32_t duration</div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:53</div></div>
<div class="ttc" id="apt_8h_html_ac7b6d8df47829d778eb598e1cc52cc2a"><div class="ttname"><a href="apt_8h.html#ac7b6d8df47829d778eb598e1cc52cc2a">apt_bool_t</a></div><div class="ttdeci">int apt_bool_t</div><div class="ttdef"><b>Definition:</b> apt.h:57</div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html_a110dfc840cb57a18974f2a9b5dfe23e0"><div class="ttname"><a href="structmpf__named__event__frame__t.html#a110dfc840cb57a18974f2a9b5dfe23e0">mpf_named_event_frame_t::reserved</a></div><div class="ttdeci">apr_uint32_t reserved</div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:48</div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html_adfadbcc21df4d99d47b7eb36503dbf30"><div class="ttname"><a href="structmpf__named__event__frame__t.html#adfadbcc21df4d99d47b7eb36503dbf30">mpf_named_event_frame_t::edge</a></div><div class="ttdeci">apr_uint32_t edge</div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:50</div></div>
<div class="ttc" id="mpf_8h_html_ad304fb07b6dc1c02975c556d198992c8"><div class="ttname"><a href="mpf_8h.html#ad304fb07b6dc1c02975c556d198992c8">MPF_DECLARE</a></div><div class="ttdeci">#define MPF_DECLARE(type)</div><div class="ttdef"><b>Definition:</b> mpf.h:40</div></div>
<div class="ttc" id="apt_8h_html_ad3d792bfc75893affad257781ea46e55"><div class="ttname"><a href="apt_8h.html#ad3d792bfc75893affad257781ea46e55">APT_BEGIN_EXTERN_C</a></div><div class="ttdeci">#define APT_BEGIN_EXTERN_C</div><div class="ttdef"><b>Definition:</b> apt.h:36</div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html"><div class="ttname"><a href="structmpf__named__event__frame__t.html">mpf_named_event_frame_t</a></div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:34</div></div>
<div class="ttc" id="mpf__codec__descriptor_8h_html"><div class="ttname"><a href="mpf__codec__descriptor_8h.html">mpf_codec_descriptor.h</a></div><div class="ttdoc">MPF Codec Descriptor. </div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html_a54affe33ca98e1d8cba3fa1c4d2acf1e"><div class="ttname"><a href="structmpf__named__event__frame__t.html#a54affe33ca98e1d8cba3fa1c4d2acf1e">mpf_named_event_frame_t::event_id</a></div><div class="ttdeci">apr_uint32_t event_id</div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:36</div></div>
<div class="ttc" id="mpf__named__event_8h_html_a6f2592b8ddb83e508bf6b98b4dacea33"><div class="ttname"><a href="mpf__named__event_8h.html#a6f2592b8ddb83e508bf6b98b4dacea33">mpf_event_descriptor_create</a></div><div class="ttdeci">mpf_codec_descriptor_t * mpf_event_descriptor_create(apr_uint16_t sampling_rate, apr_pool_t *pool)</div></div>
<div class="ttc" id="structmpf__named__event__frame__t_html_a47e4647f3cd75b3b76921de178f88196"><div class="ttname"><a href="structmpf__named__event__frame__t.html#a47e4647f3cd75b3b76921de178f88196">mpf_named_event_frame_t::volume</a></div><div class="ttdeci">apr_uint32_t volume</div><div class="ttdef"><b>Definition:</b> mpf_named_event.h:46</div></div>
<div class="ttc" id="structmpf__codec__descriptor__t_html"><div class="ttname"><a href="structmpf__codec__descriptor__t.html">mpf_codec_descriptor_t</a></div><div class="ttdef"><b>Definition:</b> mpf_codec_descriptor.h:63</div></div>
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